The faces of a polytope are two dimensional elements of a polytope that bound polyhedra. Faces of a polytope can be created when two or more cells meet each other. A polygon has a single face.
The term "n-face" is sometimes used to refer to an "n-subfacet" of a polytope, for example, tera of a 5-dimensional polyteron can be called its 4-faces.
2-dimensional faces are the facets of a polyhedron, the ridges of a polychoron, and the peaks of a polyteron.
The total area of a polytope's faces is called its surface area, or just area, if it's of a polygon.
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Null polytope · Vertex · Edge · Face · Cell · Teron · Peton · Ecton · Zetton · Yotton ... |